The LM74A is a temperature sensor produced by Texas Instruments. It can convert temperature into digital signals. In the temperature range of -40℃ to +150℃, its resolution is 0.0625℃. The supply voltage range is 4.5V to 5.5V or 3.0V to 3.6V. The supply current is very low, only 10μA.
The LM74A is a temperature sensor featuring a Delta-Sigma analog-to-digital converter with an SPI and MICROWIRE compatible interface. It is available in die form, as well as SO-8 and 5-Bump micro SMD packages. The device allows the host to query the temperature at any time and includes a shutdown mode to reduce power consumption to less than 10 µA.
| Temperature Resolution | 12-bit plus sign (0.0625°C per LSB) |
|---|---|
| Operating Temperature Range | -55°C to +150°C |
| Accuracy (0°C to +150°C) | ±3.5°C |
| Supply Voltage Range | 4.5V to 5.5V |
| Operating Supply Current | 310 µA (typ) |
| Shutdown Supply Current | 8 µA (typ) |
| Package Types | Die, SO-8, 5-Bump micro SMD |
The LM74A has a 12-bit plus sign temperature resolution, which corresponds to 0.0625°C per LSB.
The device operates with a supply voltage range of 4.5V to 5.5V.
Yes, a shutdown mode decreases power consumption to less than 10 µA.